Make cmd platform independent

[gabyx]

Great tool!

However, I am really wondering why cmd is really a string. Isn't this bringing all the caveats with shells and quoting/word splitting to the table.
I really hoped to at least see something like cmd: ["docker", "run", ...] which is actually the most sane way to specify a pure command on any OS. I did the same in Githooks.

So I propose to make the cmd variable at least string|[]string which means

• string : Normal shell execution what ever the shell is on the system. Maybe specifiable in the Taskfile.yaml (other Feature request.).
• []string: Execute the process [0] with the given arguments [1..].

That makes the whole task definition much more sane.

The same is true for .CLI_ARGS which is a string, which is not helpful, it should be []strings]